data/shortest_path/graph_structure/hard/graph1019.txt

19 31
5 0 3
0 12 8
0 4 10
0 17 7
1 2 9
2 5 6
11 2 5
2 6 10
2 14 2
12 3 10
3 10 9
7 3 8
4 3 1
14 3 5
16 4 3
4 12 5
9 4 2
12 5 8
5 8 3
5 6 9
13 6 6
6 9 9
7 18 6
7 17 1
8 17 10
9 12 2
9 11 1
14 9 3
16 10 7
15 17 6
16 17 4
13 16